一圆锥的母线长为6cm,它的侧面展开图的圆心角为120°,则这个圆锥的侧面积为______cm2.
圆锥的侧面积=120π×62360=12πcm2.
如果地转风随高度增加先减小,再反方向增大,低层温度场与气压场配置可能为()。
A.等压线与等温线垂直,冷平流
B.等压线与等温线垂直,暖平流
C.暖区与高气压重合,等压线与等温线平行
D.冷区与高气压重合,等压线与等温线平行
Excuse me. I didn't mean to bother you.()
A. There‘s no problem.
B. It‘s a pleasure.
C.That‘s quite all right.
D.I didn‘t realize that.